Grain binder



Dec.. 29, 1931 R. c. LlvEfsAY 1,838,854

GRAIN BINDER Filed Dec. 19, 1929 Patented Dec. 29, 1931 UNITEDSTATES PATENT Y OFFICE? ROBERT G.- LIVESAY, OFr MOLINE, ILLINOIS, ASSIGNOR TO DEERE`& COMPANY, OF

" .MOLINE, ILLINOIS, A CORPORATION OF ILLINOIS GRAIN BINDER plain/ion nea December. 1s, l1929.- serial Nb. 415,17a`

invention relates to Vharvesting machineryand more particularly to that part of 'the mechanism of a harvesterf and binder, byv operation of which the gavels are'i'ormed 'and tied Vin bundles, `and the object yof my inventi'onA is tohold the bundle under compression after it is'bound and the needle has'rewith the lneedle ceded for a limited distance inoperative position. f I

Referring to the drawingsin which similar numerals indicate identical parts:

in returning to an Figure 1 isv a detail side elevation or as much' of a bindingmechanism necessary to illustrate the application "of myinvention position F'gure 2 isasimilar-view-with the parts as located Vwhen abundle lis being compressed and bound;

Figure?) isanenlargeddetail section on' the line 3 3 of Figure2; y

Figure 4. is an enlarged detail section showing the mannerv ofholding the' supplemental compressor arm in raised position; and,"

` Figure 5 is an enlarged detail'section on the line 5-5 of Figure 1. Y "Withthe exception of the compressortri-p arm 1 the partsare housed below the'binder deck 2. The compressor trip arm 1 is of a common type and is secured on the compressor trip shaft 3. :The needle 4 isf rigidly mounted on the needle'shat 5 vandis of the conventional form but provided with a prong s 6 extendingrearwardly from the shank'7 of thefn'eedle and concentric with the axis ofthe latter. A- Esupplemental, compressor arm 8 is rotatably mounted on the needle shaft 5 and has,`projectin`g rearwardly therefrom, an arm 9 in whichis a slot 10 concentric with the needle shaft 5. A stud or pin 11 is attached andV my device in inoperativeA bracket 14 the arms of which are connected by 'A' an integral part 16 having a groove 17. Be-

tween the lower ends of the bracket arms,a`nd y projecting below them, is a rockingfmember lS'piVOt-ally secured in place by a bolt 19 which extends through the arms and the member 18. kThe upper end ofthe member i 18'is enlarged to form a cam 20 'having la groove 21 in opposition to the grooveV 17. A

rod 22, curved concentric with` the prong 6,

` is pivotally attached at one end to the termination of the arm 9 and extends between the yi cam2() and the part 16 and fit-s loosely'in the groovesl? and 21when the needle 4 and the compressor arm 9 are at rest or being raised. l In the operationof a binding mechanism,`

when the needle has been raised so that the i twine encompasses theV bundle and is pre-i1 sented to the knotter bill, the bundle isl formed and compressed between the needle l and the compressor arm 1; the needle, howi ever, begins its backward movement before the knotter bill has Amade more or less than a quarter turn, consequently suiicient twine to complete the knot must be taken from the twine holder and lthat around the bundle.V Now asthe compression decreases, by recession or' the needle, it is very evidentthat the swell of the bundle subjects-the twine to va .very severe strain which often results in imperfect operation'of the tying mechanism.

To holdthe bundle in compression until it' is tied I utilize my invention 'which comprises the mechanism heretofore described and which operates asfollows As shown in Figure 1 the parts arei'na normal position of rest while grain is Aaccumulating against the compressor arm 1. When the binding mechanism is tripped to operate, the needle 4 rises carrying-with it Vthe stud 11, the latter traveling in the slot 10 until it `reaches the uper end of the slot A and contacts with the arm 8,resulting in the arm rising with the needle and acting therewith incompressing the bundle, thee-rod 22 moving freely in the grooves 17 and 21 of the parts 16 and 20, respectively.

The member 18 is movable freely on its pivot consequently when the needle recedes the compressor arm 8 is held firmly against the swell of the bundle by the cam 20 clamping the rod 22 against the part 16, the action of the parts being so timed that the compressive action of the arm 8 is retained until the tying of the bundle is completed when the pressure against the arm 8 ceases by ejection of the bundle in the usual way. At theA instant of discharge of the bundle the needle 4t has receded sufliciently to contact the rounded endA of thev prong G-with a pin 23 on the me1nber 18 and as the recession of the needle con-- tinues the member 18 is rocked, to break the clamping action of the cam 20 against' the rod 22, by the pin 23 traveling over the rounded point of the prong and the inner face thereof, so that the rod 22 is again freely movable between the part. 1.6' and the cam 20, consequently the compressor arm 8 falls by gravity to its position below the deck 2.

What I claim is- `1. In a grain binder, the combination of a binding mechanism including a trip and compressor arm and a needle adapted to lbe actuated cooperatively tol compress a gavel, a supplemental compressor arm pivotally mounted upon the axis of the needle and movable to compressive action against a gavel by upward movement of the needle, a` rearward extension of said arm, a curved member pivotally attached to said extension and concentric Withthe axis of the needle, a locking device on the binder frame in constant engagement with said member and automatically operative to grip said member and hold said arm in compressive action against a gavel during a port-ion of the retrograde movement of the needle, and means on the needle extending rearwardly therefrom and operative by retrograde movement of the needle to disengage said member from the locking device and permit said arm to recede from the gavel and downward to inactive position.

2. In a grain binder, the combination of a binding mechanism including a trip andl compressor arm and a needle adapted to be actuated to cooperatively compress a gavel, a supplemental compressor arm mounted upon the axis of the needle, a slot in said arm concentric with said axis, a stud on the needle engaging with the slot and contacting with the upper end thereof to carry said. supplemental arm to compressive action aga-inst a gavel when theV needle rises, a locking device on the binder frame, means pivotally attached to the supplemental compressor arm in constant engagement with said locking device and automatically gripped thereby to hold said arm at the limit of its compressive action', and

means onthe needle operative' by the retrograde movement thereof to disengage said lock and member and permit said supplemental arm to recede from the gavel and downward to inactive position.

3. In a grain binder, the combination of a binding mechanism including a trip and compressor arm and a needle adapted to be actuated to cooperatively compress a gavel, a supplemental compressor arm mounted upon the axis of the needle, a rearward extension of said arm,.a slot in said supplemental arm and its extension, a stud on the needle engaging with the slot and contacting with the upper end thereof to raise said supplemental arm by the rise of. the needle into compressive action against a gavel', a locking device on the binder fra-me, a rod pivotally attached to said extension and in constant engagement with the lock and adapted to be gripped thereby to hold' the supplemental arm at the limit of its compressive action7 and a prong extending rearwardly from the shank ofthe needle and adapted to trip said locking device by a limited retrograde movement ofthe needle and disengage said rod and locking device to permit said supplemental arm to recede from the gavel and downward` to inactive position.

4.. In a grain binder, the combination of a binding mechanism including a trip and com pressor arm and a needle adaptedto be actuated to cooperatively compressa gaveha supplementalcompressor arm pivotally mounted on the axis of the needle and movable to compressive action against a gavel by upward movement of the needlea rearward extension of said arm, a locking device on the binder frame, a rod pivotally attached. to said extension and bent concentric to the axis of the needle and in constant engagement with the locking device, said locking device normally inactive and operating by the needle as the latter rises to grip said rod and hold said arm in compressive action against a gavel, and a prong extending rearwardly from the shank of the needle concentric with said axis and adapted to trip said locking device by alimited retrograde movement of the needle to permit said supplemental arm to recede from the gavel and downward to inactive positions.

5. In a grain binder, the combination of a binding mechanism includingia trip and compressor arm and a needle adapted to be actuated to cooperatively compress a gavel, a supplemental compressor arm mounted upon the axis of the need-le and connected withthe needle to rise therewith into compressi-ve action on a lgavel, a bifurcated bracket mounted on the binder frame, a rearward extension of said arm, acurved rod pivotally attached to said extension and projecting rearwardly between the sides of the bracket and freely movable therein when the supplemental arm is in an inoperative position or being raised to compressive action, a swinging member pivotally supported' on said bracket and having a cam at its upper end to l'grip said rod against the upper end of the bracket and hold said supplemental arm from receding from a compressing position, a, pin on the free end of said member, and a prong extending rear- Wardly from the shank 0f the needle and operating by a retrograde movement of the needle to Contact with said pin and rock said member whereby the grip of the cam upon said rod is released and the supplemental arm returns to its inactive position.

ROBERT C. LIVESAY. 

